Home / 2,841.21-4,257.87-2,147.31

Finding the Fourth Proportional to 2,841.21, 4,257.87 and 2,147.31

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Solution

The fourth proportional to 2,841.21, 4,257.87 and 2,147.31 is: 3,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.21 : 4,257.87 = 2,147.31 : x
  2. Step 2: Convert to fraction form
    2,841.21/4,257.87 = 2,147.31/x
  3. Step 3: Cross multiply
    2,841.21x = 4,257.87 × 2,147.31
  4. Step 4: Simplify right side
    2,841.21x = 9,142,966.83
  5. Step 5: Solve for x
    x = 9,142,966.83/2,841.21
  6. Step 6: Final answer
    x = 3,217.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.